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Finding the Fourth Proportional to 641,758.60, 885,823.85 and 370,007.90

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Solution

The fourth proportional to 641,758.60, 885,823.85 and 370,007.90 is: 510,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,758.60 : 885,823.85 = 370,007.90 : x
  2. Step 2: Convert to fraction form
    641,758.60/885,823.85 = 370,007.90/x
  3. Step 3: Cross multiply
    641,758.60x = 885,823.85 × 370,007.90
  4. Step 4: Simplify right side
    641,758.60x = 327,761,820,244.86
  5. Step 5: Solve for x
    x = 327,761,820,244.86/641,758.60
  6. Step 6: Final answer
    x = 510,724.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.